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3rd Grade Ch. 2 Lesson 4 How are animals from the past like today's animals
3rd Grade Ch. 2 Lesson 4 How are animals from the past like today's animals
3rd Grade Ch. 2 Lesson 4 How are animals from the past like today's animals
3rd Grade Ch. 2 Lesson 4 How are animals from the past like today's animals
3rd Grade Ch. 2 Lesson 4 How are animals from the past like today's animals
3rd Grade Ch. 2 Lesson 4 How are animals from the past like today's animals
3rd Grade Ch. 2 Lesson 4 How are animals from the past like today's animals
3rd Grade Ch. 2 Lesson 4 How are animals from the past like today's animals
3rd Grade Ch. 2 Lesson 4 How are animals from the past like today's animals
3rd Grade Ch. 2 Lesson 4 How are animals from the past like today's animals
3rd Grade Ch. 2 Lesson 4 How are animals from the past like today's animals
3rd Grade Ch. 2 Lesson 4 How are animals from the past like today's animals
3rd Grade Ch. 2 Lesson 4 How are animals from the past like today's animals
3rd Grade Ch. 2 Lesson 4 How are animals from the past like today's animals
3rd Grade Ch. 2 Lesson 4 How are animals from the past like today's animals
3rd Grade Ch. 2 Lesson 4 How are animals from the past like today's animals
3rd Grade Ch. 2 Lesson 4 How are animals from the past like today's animals
3rd Grade Ch. 2 Lesson 4 How are animals from the past like today's animals
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3rd Grade Ch. 2 Lesson 4 How are animals from the past like today's animals

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  • 1. Ch. 2 Lesson 4 How are animals from the past like today’s animals?
  • 2. fossils
    • signs of past life
    • made from hard parts of animals
    • tell how Earth has changed over time
  • 3.  
  • 4. 1. fossil mold
    • space in the shape of an animal in rock
  • 5. 2. cast
    • shape of original fossil
    • fossil mold that has been filled with rock materials over time
  • 6.  
  • 7. 3. amber
    • hardened tree sap that traps animals
  • 8.  
  • 9. 4. fossils in tar pits
    • Animals fell into tar pits
    • Soft parts of animals broke down
    • Left actual bones behind
  • 10. Saber-toothed tiger Unlike the fossil remains of most dinosaur bones, the bones of this fossil saber-toothed tiger are actual bone.
  • 11.  
  • 12. extinct
    • no longer living
  • 13.  
  • 14. Badlands in South Dakota
    • Before
    • hot, wet climate
    After desert
  • 15. Reptiles resemble dinosaurs
  • 16. What is hardened tree sap that trapped animals? tar amber cast fossil mold
  • 17. The Badlands in South Dakota have always been a desert. TRUE FALSE
  • 18. What kind of fossil is this? fossil mold cast amber tar pit

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